I do not fully understand how strong your winds are maybe.
You may already know this also.
If the tower was damaged I would think you need a stronger tower, with such high wind speeds perhaps not a very tall tower.
If the blades were damaged, did you have a system to turn it out of winds (furling) that are too fast so that it will run slower or not at all. I have known many people that think a windmill is supposed to always face into the wind, that is not correct.
However they do not have a windmill either. It should turn away from heavy winds that are too strong, but not so far that it stops running, only so that it does not run too fast.
Did you have a good load on it to hold the speed of the blades down. If the gennie was free spinning with full charged batteries or disconnected it will over speed in fast winds and break something. This is one of the reasons we use dump loads, so the gennie still has to work to produce power even when the system is fully charged, this helps to keep it running at slower speeds in high winds like storms. When the batteries reach full charge any power made beyond that should be used for something, anything, like heating water or running motors so that the wind gennie still has to produce power and not free spin. Just shutting of the power to the batteries will cause it to spin freely way too fast. It is better to waste any extra un-needed power it may make than it is to disconnect it or let it run free.
With such high winds could you use smaller blades? Less stress on all parts the smaller the blades are. Normally large blades are wanted because the wind is not so strong. Perhaps much smaller blades could produce plenty of power in your high winds, the same small blades may not work well in lower wind areas like here at my place but may work fine for you.
If all is done correct I would think the roof would come off the house before the windmill would break. I have seen that happen! Very bad storm destroyed a house, blew over large trees, but the windmill was still running fine when the storm was over.
You say you need 7kw of power. I myself would use several smaller windgennies instead of trying to use one large one. If one breaks you still have power from the others. Maybe less chance of breaking smaller ones in such high winds also.
If reasonable to do, I would try to use 7 gennies of 1kw each. Or 3-4 of 2kw each.
7KW is ALOT of power!! Do you mean per day average? 7kw is about Half my daily usage here.